Top "Setuid" questions

`setuid` is a file permission flag under Unix-like systems that will run an executable with the file owner's permissions rather than the invoking user's. On some systems (FreeBSD), it further works identically to the related `setgid` flag on directories, causing new files to inherit the directory's permissions rather than the current user's.

Getting message "sudo: must be setuid root", but sudo IS already owned by root

I'm trying to run sudo, and it's failing: gregd@david $ sudo ls sudo: must be setuid root gregd@david $ which …

linux sudo setuid
Run child processes as different user from a long running Python process

I've got a long running, daemonized Python process that uses subprocess to spawn new child processes when certain events occur. …

python fork subprocess setuid
Calling a script from a setuid root C program - script does not run as root

I need to run a bash script as root (passwordless sudo or su not viable) and since you cannot setuid …

c scripting setuid
RealUID, Saved UID, Effective UID. What's going on?

This is a set-root-uid program $ls -l -rwsr-sr-x 1 root root 7406 2011-12-13 22:37 ./x* The source code: int main(void) { printf( " …

linux privileges setuid
correct way to run setuid programs in C

I have a process with permissions 4750. Two users exist in my Linux system. The root user and the appz user. …

c linux security setuid
Setuid bit on python script : Linux vs Solaris

I am running this small python script on both linux and Solaris as a not privileged user : #!/usr/bin/python …

python linux solaris setuid
system() vs execve()

Both system() and execve() can be used to execute another command inside a program. Why in set-UID programs, system() is …

security exec elevated-privileges setuid
LD_PRELOAD with setuid binary

I am trying to use LD_PRELOAD to preload a library with an application that has setuid permissions. Tried LD_…

linux setuid ld-preload
"Operation not permitted" on using os.setuid( ) [python]

I'm trying to build a platform to launch some scripts. This scripts are placed in home folder of each user. …

python operating-system privileges setuid
how do i run valgrind to a process which has super user bit on?

I am running valgrind as follows:- /usr/local/bin/valgrind "process_name" After excecution its giving me following error ==21731== ==21731== …

linux memory valgrind setuid